Carbureter-feed system.



1. P. FARRELL.

CARBURETER FEED SYSTEM.

APPLICATION FILED SEPT. 2o. |915.

1,245,893. v Patented Nov. 6, 1917.

\\' l'l N ESS EN 1N Y EXTOR Ow f I JmEFar/e/ .vri-nus uws.

JAMES P, FARRELL, F SAN'y FRANCISCO, CALIFORNIA, ASSIG-N'OR 0F' ONE-HALF T0 f l LOUIS LEVY, 0F SAN FRANCISCO, CALIFORNIA.

cAnBUnETEn-FEED SYSTEM.

Lacasse..

Application filed Septeniber 20, 1915. Serial No. 51,586.

To all whom t may concern:

Be it known that I, JAMES P. FARBELL, ai citizen of the United States, residing at the city and county of San Francisco and- State of California, havinvented new and useful Improvements in -Carbureter-Feed Systems, 4of which the following is a speciat all times.

fication.

This invention relates to a carbureter feed system.

@ne of the objects of the present invention is to provide an auxiliary tank or `container for gasolene which is so" positioned between the main supply tan-k and the engine on a car that the gasolene may be fed therefrom tothe carbureter by gravity Another object of theinvention, is to yprovide means connected with the engine and ,actuated by the pressure and suction produced therein for elevating the gasolene from the main Isupply tank to the auxiliary container. lFurther objects Will hereinafter appear.

The invention consists of the parts'and the construction and combination of parts, as hereinafter more ful/ly described and claimed, having reference to the accompanying drawings in whichv Figure 1 is a central, vertical section through the auxiliary tank.

Fig. 2 is a cross section on line 2 2, Fig. 1.

-Fig. 3 is a perspective view, showing Ivthe application of the invention.l

Referring to the drawings in detail, A indicates` an internal combustion engine; 2 one ofthe cylinders; 3 the piston operating therein, and 4 the auxiliary tank orl c'ontainer, from? which gasoleneis fed by gravity through a pipe 5, to the carbureter of the engine, indicated at 6. The .auxllia'ry tank'or container,4 is provided wlth a bottom section 7 of convex shape, exterior of which is secured by screws 8, or other suitable means, a similar shaped plate 9. 'Pos1- tioned between the bottom 7 and the p late 9, and secured between same is a flexlble diaphragm 10, which divides the chamber 4 formed between the two -plates into two sections 11 and 12. Connected with vthe bottom 7 and communicating with chamber 11,

is a pipe 13, the opposite end' of which is connected with a gasolene supply tank, not here shown, and mounted in saidpipe, as close as possible to the end thereof, as shown Specification of Letters Patent.

Patented Nov. 6, 191'?.

in Fig. l, is a check valve 14, of suitable construction.` Formed approximately in the center of the bottom plate 7, is an opening 15 which 1s tapered to form a seat to receive a checky valve 16, which is normally held in posltion by means of a'spring 17, interposed between the valve and -an adjustable guide bushing-1,8, carried by a bracket 19 and secured to valve 16, and extending through and'guided in bushing 18, `is av valve stem 20, on the upperend of which is formed an adjustable stop 21. Surrounding the valve stem and slidably mounted on same, is a float 22 of suitable construction, which is elevatedor lowered by the gasolene admitted .to the tank 4. Connected with the lower endof the tank is the pipe 5, by which the gasolene is permitted to feed by gravity to` the carbureter 6, and' formed`in the lower plate 9 and communicating with chamber 12, is`an opening 23, to which is connected one end of a pipe 24, the opposite end of which` communicates with the interior of cylinder 2. The direct `communication between chamber 12 and -cylinder 2, formed by pipe 24, permits the, Variable pressure produced in the cylinder, `such as compression, explosion and suction to actuate the diaphragm 10, in this manner permitting this to act as a pump which will elevate gasolene from the main supply ta'nk, not

here shown, through pipe 13 into the auxiliary tank 4, as will hereinafter be described.

With .the engine running, and the piston movingup `on the compression stroke, it,will

be seen that a certain amount of gas underv pressure is forced into chamber 12, where'itf causes the diaphragm 10 to expand or move in the direction of-arrow a. The moment explosion takes place or a charge is fired, a still higher pressure is produced, which moves the diaphragm still farther in the direction, indicated. Any gasolene admitted through thepipe 13, from the main storage tank will then be forced through opening 15, by the valve 16 into the auxiliary tank 4. The lpressure in eylinder 2, is however, gradually relieved as the exploded 'charge expands andjthe piston moves down, per-` mitting `the diaphragm to movein the oppo This movement is further assisted when. thepiston moves down on the site direction.

suctionstroke', as a vacuum will then beproduced, which is suiiclent to not only return the diaphragm to normal position, but also move it slightly Abeyond the normal plane in the `opposite direction.- rllhe movement of the diaphragm away from the bottom section 7 produces a vacuum or sufficient suction in chamber 11, to close check valve 1G and open check valve 14, thus drawing a new charge of gasolene from lthe storage tank through pipe 13 into chamber 11;,.this charge of gasolene admitted is again disv charged, when pressure is produced in the cylinder, both by compression and by firing of the charge in the cylinder, this causes the diaphragm to move in the direction of-arrow-a, closing check valve 14, and forcing check valve 16 open, thus permitting the chargeof 'gasolene previously admitted to be discharged into the'containeror auxiliary tank 4, from where it is permitted to feed by gravity through pipe 5 to the carbureter.

, rllhe supply of gasolene or contents of the auxiliary container 4, is regulated (by the oat valve 22, as thelevel of gasolen graduj ally increases or rises, it will be s en that is in this manner automatically maintained,

while. the engine is running, and thequantity .of gasolene delivered to same is automatically regulated vby the speed of the engine, .as the diaphragm is "reciprocated or l 'expanded and contracted at a speed controlled by the engine. 1n other words, if the engine is running slow, a small quantity of gasolene will 'be delivered to the auxiliary container, while if the. engine is running at a high speed, a proportionally greater quantitywill be delivered. Q y

The feeding device here shown, is simple and substantial in constructiomcan be easily attached to any car and needs no attention or adjustment, asit is automatically started or stopped in, unison with the engine. 'llhe force or pressure from the engine is applied to one side'of the diaphragm only, and as there is absolutely noconnection between the lower and upper sides of 'the diaphragm, it

i' will, therefore, be impossible to dilute or Apassed through the carburetor.

foul the contents of the container. fllhe gasolene is furthermore heated toy a certain extent by thewarm gases impinging .against the -lower side' of the diaphragm, and is therefore, more easily vaporized when The 4device is only provided with two valves, and as these-are constantly subnaetteee merged and operated in a bath of gasolene,

Iit can easily be seen, that the action is such,

that any dirt or, foreign matt r will become veasily destroyed if caught un er the valves.

rlihe materials and nish J'of the several parts of the devicemay besuch as the judgment and experience of the manufacturer may dictate, 'y

1 wish ."t understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the .appended claims, and that 'I do not wish to limit myself tothe specific design and construction here shown. Having thus described my invention, what ll"c1aim and desire to secure 'by Letters Patent is 1. An auxiliary feedtank havinga bottom formed of a pair of horif'zontal con-b nected concavo-convex platesarranged withj their concave faces in confronting relation, the upper plate having a centralvalve seat, an inverted y U-shape'd bracket secured to upper plate over said seat .and having its top perforated, a guide bushing threaded through `said perforation so as to be vertically adjustable, the lowerV plate having a central inlet for connectionV to an engine, a horizontal diaphragm between said plates, a valve arranged in said seat, a valve stem connected to said valve and extending freely through the bushing, a coil spring encircling said stem and abutting the valve and lower end of the bushing, a carburetor supply pipe connected to the tank, a float for actuating the valve stem, and an inverted', U-Shaped gasolene supply pipe connected to the upper plate at one end to' discharge on the 'upper side of the diaphragm and' having/its opposite end extending downtwardly through said bottom of the tank.

v2. An auxiliary feedatank having a 'bottom formed of a pair of horizontal concave- .convex plates each of substantially uniform thiclmesse throughout arranged with their concave faces confronting, a valve seat on theupper plate, `a tensioned valve in said seat, a oat for actuating the valve, a diaphragm between the plates, a carbureter "supplyv pipe'having its upper end extending upwardlythrough both plates and into the tank, and a gasolene supply pipe extend-` lng upwardly through lboth plates and'having its end connected to thetop plate so -as to discharge gasolene onto the upper face of the diaphragm.

.. 3. lAn auxiliary feed tank having a bot 4 tom' formed of a` pair of horizontal' con- ,top perforated, a guide'v bushing' threaded through said perforation so as to be verti- 130 -cally adjustable, the' lower plate having a ply pipe leading into the tank -and dischargcentral inletv for connection' tq an engine, a, ing above the diaphragm and thereon. horizontal diaphragm between said plates, y In testimony whereof I have hereunto set a valve arranged in said seat, a valve stemA my hand inthe presence of two subscribing p 5 clonnecled ltlo sgidilvalve and lxtending freely .,wltnesses. p

-t roug ft e us ing' a co' spring e'ncircling said' stem and abutting the valve and JAMES P FARRELL' lower end of the bushing, a carbureter sup- Witnesses: ply pipe connected tothe tank,- a float for HEALEY, 10 actuating the valve stem, and a gasolene supi M. E. E W-ING. 

